High-tension switch



v 1,640,457 1927' F. P. LAWLERV HIGH TENSION SWITCH Original Filed July 9, 1924 Inventor Fran/r PLaW/er,

His Attorngy Patented 30, 1927.

UNITED STAT S" ATE NT OF P. LA WLEB, OF SAN FRANCISCO, CALIFORNIA, ASSIGNOR TO GENERAL ELEC- I TBIG COMPANY, A CQRPOBATION OF NEW YORK.

men 'rnNsIon swrrcn.

\ i Application filed July 9, 1924, Serial No. 725,050. Renewed June 25, 1927.

My invention relates to high tension switch mechanisms of the general type dlsclosed in my Letters Patent No. 1,464,368,'

dated August 7, 1923, reissued May 13, 1924, 6' No. 15,838, and in' my copending applicatlon Serial No. 725,049, filed July 9, 1924.

. The object of my inventlon is to provide an improved high tension circuit control mechanism or switch of'the t pe disclosed '10 by my Letters Patent, aforesai which is of simple construction and is designed for operation under conditions when, it is egzposed to sleet and ice.

My invention willbe better understood on reference to the following description when considered in connection with the accompanying drawing and its scope will be pointed out 1n the appended claims.

Referring to the drawings, Fig. 1 shows a circuit control mechanism or switch in which my invention has been ernbodied; and Figs.

2 and 3 show certain details of the carriage.

by means of which the movable contact of the apparatus is moved to and fro between its open and closed positions.

Fig. 1 shows line sectional and 2 arranged to be interconnected through line ter- -minals 3 and 4, movable contact 5 and a yieldableconnection comprising members 6 and 7, which are pivoted, at 8 and 9 res ectively, and are hinged together at 10. ny other suitable form of 'yieldable connection may of course be used. Line sections 1 and 2are supported through dead-end insulators 11 and 12 respectively fromopposite ends of a trackway 13 shown as made of an angle iron mounted on' the supports 14 and 15. -For the purpose of insulating and supporting the switchline terminals 3 and 4, insulators 16 and 17 are located at opposite ends of the trackway 13. The movable contact 5.

is mounted on an insulating pillar 19 which is supported by a carriage arranged to move along the trackway 13.- Means comprismg sprocket chain 20 attached to. the carriage at 21 and a wire or rope.22 attached to the carriage at 23 areprovided for moving the carriage along the trackway. The sprocket chain 20 and rope 22 are attached together 59 at 24 and are arranged to cooperate with I sprocket gear 25 and idler pulley 26 respectively. Any convenient means may be provided for rotating the shaft 27 on which the sprocket gear 25 is mounted. Certain details of the carriage are shown in Fig. 3 andin Fig. 2 which is a sectional View taken on the line ab of Fig. 3. These figures'show a yoke member 28 provided with bearings=29 and 30 adapted to receive opposite-ends of a shaft 31 upon which is mounted a wheel 32. The wheel 32 is arranged to support the carriage and to roll along theupper edge of the angle member .l3'as thecarriage is moved fromone posiadapted'to havean-insulator mounted on its lower surface. Rollers 35 arranged to engage the lower edges of the anglememb'er 13 are mounted on the upper surface o f-themember 33. Shims 36 and 37 may be interposed between the members 28 and 33 to maintain the wheel 32 and the rollers 35 in close contact with the edges of the trackway 13.

The member 28 forms a cover by which the wheel 32 and rollers 35 are protected .from the weather. The trackway l3,-however, is uncovered. It is therefore desirable to provide some means for removing accum'ulations of ice and snow which would interfere with the operation of the carriage. Any suitable brushing or scraping means operable in response to movement of the car may be provided for this purpose. In Fig. 3, I have shown scrapers 38 and 39 attached to opposite ends of the member 28 and arranged to clear. a pathway for the wheel 32.

Similar scrapers may be provided if necessary for removing the ice depending on the lower edges of the member 13. A sufficient clearance may be provided between the sides of the framework 28 and the surfaces of the member 13 so that it will be unnecessary to remove ordinary accumulations of sleet or snow from the member 3 exceptat the top along which wheel 32 moves and in some cases at the bottom edges. The arrangement shownin Figs. 2 and 3 is well adapted for systems of moderately high tension, but where the system is to operate at voltages in the neighborhood of 200,000, the provision of an angle member 13 of moderate size will not provide a su fliciently stable mounting forthe movable insulator which may be 6 ft. ormore in height. It is obvious, however, that the angle member 13 may be refabricated triangular structure placed by a an angle member at the top of What I claim as new and desire to secure :by Letters 'Patent of the United States is 1. A circuit control mechanism wherein a line terminal is connected to a fixed contact and wherein a movable contact operable to open and closed positionsis. arranged to engage said fixed contact in its closed position,

comprising an angle member, and a carriage having a Wheel arranged to roll along the corner of said angle member for supporting said movable contact.

2. In a mechanism for controlling a circult through an electric power line, the combination of an angletmember, stationary insulators located at opposite ends of said angle member, switch line terminals mounted! on said insulators, a fixed contact associated with one of said terminals, and means for interconnecting said terminals includinga carriage provided with a wheel arranged to roll upon the corner of said angle member,

an insulating pillar supported by said can riage and a contact mounted on said pillar.

3. A circuit control mechanlsmwherem a line terminal is connected to a fixed contact and rails at the bottom sides of and wherein a movable contactoperable to open and closed positions is arranged to engage said fixed contact in its closed pos1 tion, comprising an angle member, a carriage including a Wheel adapted to roll along the corner of said angle member, and rollers arranged to contact with the edges of said angle member.

4. A circuit control mechanism wherein a line terminal is connected to a fixed contact and wherein a movable contact operable to open and closed positions is arranged to engage said fixed contact in its closed position, comprising a trackway formed of an angle member, a carriage including a wheel adapted to rotate along the corner of said angle member, a yoke memberarranged-to support said movable contact and to form a bearing for said wheel, a base member attached to the edges of said yoke member, and

rollers mounted upon said base member to 'roll along the edges of said angle member for maintaining said movable contact in alinement with said fixed contact.

5. A circuit control mechanism-wherein a line terminal is connected to a fixed contact and wherein a movable contact operable to open and closed positions is arranged to engage said fixed contact in its closed position, comprising an angle member forming a trackway exposed to the weather, a carriage for moving said movable contact including a wheel adapted-to roll along the corner of said angle member, and means operable in response to movement of said carriage for clearing a pathway for said wheel.

In witness whereof, I have hereunto set my hand this 27th day or" June, 1924.

FRANK P. LAWLER. 

